Electrical Tools

Motor Current Calculator

Calculate rated current and starting current for AC motors. Supports single-phase and three-phase motors with efficiency and power factor.

Motor Specification

Rated Power (kW)

Voltage (V)

Efficiency (%)

Power Factor

Phase

Three-phase Single-phase

Starting Method

DOL (×6) Star-Delta (×2) Inverter (×3)

Result

Three-phase: I = P / (√3 × V × η × cosφ). MCB at 125% Ir per IEC. Cable per IEC 60228 copper ampacity.

Capacitor Calculator

Calculate capacitor size for power factor correction (μF) or capacitor energy (J). Supports kW, kVA input with target power factor.

Solar Panel Calculator

Calculate solar panel energy output, system size, and estimated electricity bill savings. Enter panel wattage, quantity, peak sun hours, and efficiency.

Three-Phase Power Calculator

Calculate three-phase active power (kW), apparent power (kVA), and reactive power (kVAR). Also find current from power.